Question

1. A roller coaster car rapidly picks up speed as it rolls down a slope. As it

Answer 1

Answer:

The average acceleration, aₐ = 6 m/s²

Explanation:

Given that,

The initial speed of the roller coaster car, u = 4 m/s

The final speed of the roller coaster car, v = 22 m/s

The time taken to attain the final speed is, t = 3 s

The average acceleration is defined as the change in the final velocity to initial velocity by time.

                                        aₐ  = v - u / t         m/s²

Substituting the values in the above equation,

                                         aₐ = 22 m/s - 4 m/s  /   3 s

                                              = 6 m/s²

Hence, the average acceleration of the roller coaster is aₐ = 6 m/s²